Valve-remover



U. E 6. JOHNSON,

VALVE REMOVER.

APPLICATION FILED FEB. 26. 1920.

I 1,378,463. I Patented May17 ,19.2 1.

3 SHEETS-SHEET 1. W ,19

U. E. G. JOHNSON.

VALVE-REMOVER. APPLICATION FILED FEB. 26, 1920.

1,378,463. Patented May 17,1921.

' SSHEETS-SHEET 2.

U. E. G. JOHNSON.

VALVE REMOVER.

APPLICATION FILED FEB.26,.1920.

Patented MW, 1921.

s SHEETS-SHEET s.

UaiT D STATES PATENT OFFICE.

ULYSSES E. e. JOHNSON, or rrrrsrrnnn, Massaonusnr'rs.

VALVE-REMOVER.

Specification of Letters Patent. 1 P t t May 17,

Application filed February 26, 1920., Serial No. 361,428.

To all whom it may concern:

Be it known that I, ULYSSES SON, a citizen of the United States,residing at Pittsfield, Massachusetts, have invented scription andclaims when taken in connec-.

tion with the accompanying drawings, in which r Figure l is aperspective view of the valve removing tool in operative position on thetop of an engine cylinder;

Fig. 2, a top plan view;

Fig. 3, a part sectional and part perspective view showing particularlythe construction of the tool head;

Fig, i, a view along the line 4 a, Fig. 3;

Fig. 5, a view along the line 55, Fig." 3;

Fig. 6, a view along the line 6-6, Fig. 3; Fig. 7, a view along the line7'7,,Fig. 1 and Fig.8 is a top plan view showing my invention in actualuse on the engine of the Buick type.

Referring to the drawings, 1 designates an engine cylinder, in anopening 2 of which is seated the valve assembly comprising a valve cage3 having ports, one of which designated at 4communicates directly withthe combustion chamber 5 of the cylinder. A valve 6 is shown seated inthe port 4, which valve may be either an inlet or exhaust valve. Thestem 7 of the valve extends through the valve cage and projects beyondthe same, being longitudinally movable through a guide 8, consisting ofa tubular extension of the valve cage. The valve is normally held closedby the usual spring 9, one end of which is sustained by a cup 10 whichE. G. JOHN.

is adjacent to the cage 3, and the other end by the cup washer or cap 11which is held in place on the valve stem 7 b the usual in or key '12. yp

All of the parts thus far described are of the usual construction andarrangement now in common use in engines of the valve in the head type.

' The valve assembly removing tool of this invention comprises asubstantially U-shaped frame or yoke 14, which is inverted when in itsoperative'position, said frame comprising an arched crown top 15 andsubstantially parallel legs 16. The distance between the legs is suchthat the yoke 14 may straddle the valve assembly and rest directly uponthe top'of the cylinder, as shown in Fig. 1. The, crown of the yoke isformed into a socket 17, in which a head 18 is mounted for rotation.This head is interiorly screw-thread ed and may be shaped on itsexterior such as to readily accommodate a wrench, and in addition anopening through said head may ac commodate a cross-bar 19, whichcross-bar may also be used for rotating the head. In order to hold thehead in place withinthe socket 17, the head is formed with a circulargroove 20 near its lower end, and a ring or screw is passed through thesocket 1.7 for engagement with said groove.

Valve engaging jaws 21 are pivotally supported inthe bifurcated end 22of a' jack-- screw 23, having'threads to fit the threadsof the head 18.The jaws are constrained to move in a single plane in said jack-screworjaw-supporting member 23, and in order to i provide a tool which isadapted to various models of engines, the said jack-screw is mounted sothat it cannot rotate during its up and-down movement in the head, 1 andpreferably such rotation is prevented byproviding an opening in thecrown of the yoke, said opening having flattened sides 24, the sides ofthe j ack-screw 23 being correspondingly flattened. It will be noted, byreference to Figs. 4 and 5, that the plane formed by the flattened sidesmakes an angle with the vertical plane of the legs of'the yoke, and thisangle is preferably such that the jaws may open beyond the yoke legs butare in close proximity to said legs. This is an important feature, as itenables a tool of the present invention to be used 011 some models ofengine where it would be impossible to use a tool having the jaws movingin a plane at a right angle or at substantially a right angle to theplane of the yoke. Said legs preferably act as guides during the openingand closing movement oi said jaws. Furthermore, the jaws moving in thismanner make it convenient to grasp them in attaching the tool to the topof the valve cage with the left hand, while leaving the right hand freeto adjust the jaws to the valve spring when the-tool is in place.

It will also be noted that the jaws are attacheddirectly to thejaw-supporting memher or jack-screw 23, dispensing with a crosshead orother cumbersome substitute, thus simplifying the construction.

In operation, the tool is placed in the position shown. in Fig. 1, thejaws 21 being placed to engage the spring 9 as shown, it being of coursenecessary to first remove the rockerarma25 from its connection with thevalve cage, said-rocker arm being also disconnected from thecam-actuatedrod 26, these parts operating in a manner well understood by thosefamiliar with this art.

The'tool head, 18is then rotated either by the bar 19 or by means of awrench. Any valve in a series may be removed independently withoutinterferingwith. any other "In Fig. 8 which shows a practical application of my improved device as applied to ai Buick engine of the 1919 20type, .the' rocker arm-25 is shown as removed from the first cylinder 28and the valve remover appliedto this particular valve. By reason of thefact that the aws 21 move in a plane close to the )lane of the le s ofthe 1 oke,

l e a each individual valve may be removed withapplied to the valveindicated, by 29 andfurthermore the jaws in this case wouldinteriferewith the water connection shown at 32. Slmllarconditions wouldcause interference it the valve remover were applied to the valve 30 orthe valve 31, readily apparent. I

,What I claim as new is: 1. In a valve removing tool, the combinationwith a yoke having supporting legs, of a pairof jaws supported in saidyoke, said jaws having pivotal and vertical movement, means forconstraining said jaws against rotational movement, said restrainas will"be ing means acting to confine said jaws in their pivotal movement to avertical plane, which makes but a slight angle with the vertical meansacting to confine said member to vertical movement in said yoke so thatsaid aws 1n their pivotal movement may escape said legs but areconstrained to move imme- 1 diately adjacent thereto.

In a valveremoving tool, the combination with a yoke having a head andsupporting legs, of a supporting member mounted for verticallmovement'in thehead of said yoke, jaws pivoted to said member andconfined to movement in a single plane, said member being screw-threadedand being flattened to prevent rotation in said yoke head, saidflattened portion of said screwthreaded member forming such an anglewith the vertical plane of the legs of the yoke as to merely permitclearance of each leg by the jaw adjacent thereto.

4c. In a valve removing tool, in combination with a yoke havingsupporting legs, of jaws supported by said yoke, and means for,confining said jaws to open and close in a plane forming such an anglewith the vertical'plane of the legs of the yoke whereby the legs of theyoke act as a guide for the jaw adjacent thereto in its opening andclosing movements.

5. In a valve removing tool, the combina tion with a yoke havingsupporting-legs, a member rotatably mounted inthe crown of said yoke,said member being internally screw-threaded, a jaw supporting memberengaging the threads of said first mentioned member, and jaws pivotallymounted in said jaw-supporting member and confined thereby to movementina single plane,

6. In a valve removing tool, the combination with a'yoke havingsupporting legs, a member rotatably mounted in the crown of said yoke,said member beingiinternally screw-threaded, a jaw supporting memberengaging the threads of said first mentioned member, jaws pivotallysupported in said jaw supporting member, said yoke having a hole withflattened sides through which said jaw supporting member-passes, where'.by the latter is permittedvertical movement but is restrained fromrotative movement.

7. In a valve removing tool, the combination with a yoke havingsupporting legs, a member rotatably mounted in the crown of said yoke,said member being internally screw-threaded, a jaw'supporting memberengaging the threads of said first mentioned member, jaws pivotallysupportedin said jaw supporting member, said yoke having a as to merelypermitof the clearance of each hole with flattened sides through whichsaid leg by the jaw adjacent thereto. 10 jaw supporting member passes,whereby the Signed at Pittsfield Mass, this 19 day latter is permittedvertical movement but of February, 1920.

is restrained from rotative movement, the U. E. G. JOHNSON. flattenedsides of said member located in a Witnesses: I o vertical plane makingsuch an angle with DANA S. MERRIMAN,

the vertical plane of the legs of said yoke F. HARRIS RAY.

